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107 lines
2.7 KiB
107 lines
2.7 KiB
package types
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import (
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"bytes"
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"fmt"
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"github.com/tendermint/tendermint/crypto/tmhash"
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"github.com/tendermint/tendermint/crypto"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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// Volatile state for each Validator
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// NOTE: The ProposerPriority is not included in Validator.Hash();
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// make sure to update that method if changes are made here
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type Validator struct {
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Address Address `json:"address"`
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PubKey crypto.PubKey `json:"pub_key"`
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VotingPower int64 `json:"voting_power"`
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ProposerPriority int64 `json:"proposer_priority"`
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}
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func NewValidator(pubKey crypto.PubKey, votingPower int64) *Validator {
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return &Validator{
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Address: pubKey.Address(),
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PubKey: pubKey,
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VotingPower: votingPower,
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ProposerPriority: 0,
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}
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}
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// Creates a new copy of the validator so we can mutate ProposerPriority.
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// Panics if the validator is nil.
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func (v *Validator) Copy() *Validator {
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vCopy := *v
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return &vCopy
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}
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// Returns the one with higher ProposerPriority.
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func (v *Validator) CompareProposerPriority(other *Validator) *Validator {
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if v == nil {
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return other
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}
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if v.ProposerPriority > other.ProposerPriority {
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return v
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} else if v.ProposerPriority < other.ProposerPriority {
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return other
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} else {
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result := bytes.Compare(v.Address, other.Address)
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if result < 0 {
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return v
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} else if result > 0 {
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return other
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} else {
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cmn.PanicSanity("Cannot compare identical validators")
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return nil
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}
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}
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}
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func (v *Validator) String() string {
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if v == nil {
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return "nil-Validator"
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}
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return fmt.Sprintf("Validator{%v %v VP:%v A:%v}",
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v.Address,
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v.PubKey,
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v.VotingPower,
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v.ProposerPriority)
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}
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// Hash computes the unique ID of a validator with a given voting power.
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// It excludes the ProposerPriority value, which changes with every round.
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func (v *Validator) Hash() []byte {
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return tmhash.Sum(v.Bytes())
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}
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// Bytes computes the unique encoding of a validator with a given voting power.
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// These are the bytes that gets hashed in consensus. It excludes address
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// as its redundant with the pubkey. This also excludes ProposerPriority
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// which changes every round.
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func (v *Validator) Bytes() []byte {
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return cdcEncode(struct {
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PubKey crypto.PubKey
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VotingPower int64
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}{
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v.PubKey,
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v.VotingPower,
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})
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}
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//----------------------------------------
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// RandValidator
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// RandValidator returns a randomized validator, useful for testing.
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// UNSTABLE
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func RandValidator(randPower bool, minPower int64) (*Validator, PrivValidator) {
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privVal := NewMockPV()
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votePower := minPower
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if randPower {
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votePower += int64(cmn.RandUint32())
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}
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pubKey := privVal.GetPubKey()
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val := NewValidator(pubKey, votePower)
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return val, privVal
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}
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